Pipe-heading machine.



PATENTED, JULY 24, 19.06;

J. S. P. MARKS. PIPE HEADING MACHINE.

AYPLIOATION FILED AUG.31.19Q5.

2 SHEBTSSHEET 1.

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PATENTED JULY 24, 1906.

' J. s. P. MARKS.

PIPE HEADING MACHINE.

APPLIOATION FILED AUG.31.1905.

2 SHEETS-SHEET 2.

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WITNESSES.-

ATTORNEY UNITED sTATEs- PATENT OFFIOE.

JOHN'S. F. MARKS, .OF OLYMPIA. WASHINGTON, ASSIGNOR TO NATIONAL WOOD PIPE COMPANY, OF sAN FRANCISCO, CALIFORNIA, A CORPORA- TION OF CALIFORNIA.

PIPE-HEADING MACHINE.

Specification of Letters Patent.-

Patented July 24, 1906.

' Application filed August 31, 1905. Serial No. 276,511.

Heading Machines, of which the following is a'specification, reference being had therein to the accompanying drawings, in which- Figure 1 is a front elevation of a pipeheading machine embodying my invention. Fig. 2 is a plan view of the same. Fig. 3;is a cross-sectional view on line 3 3 of Fig. 2.

Figs. 4 and 5 are cross-sections on lines 4 4 Fig. 6 is a section on line and 5 '5 of Fig. 3.

6 6 of Fig. 1. Fig. 7 is a detail sectional view of'one of the fluid-controlling valves.

Figs. 8 and 9 are detail views of the knives respectively used for external and internal cuts.

The object of this invention is the provision of improved means for shaping the ends of wood pipes to make interfitting joints.

- To this end my improved apparatus consists in the novel construction, adaptation, and combination of parts, as will be hereinafter described, and more particularly pointed out in the claims.

In the illustrated embodiment I provide a bed-frame comprised of foot-supports A, which are rigidly connected to and sustain longitudinally-disposed parallel I-beams A, having secured thereto rails A serving for the track or guideways of the movable head and tail stocks B B and the carriages O. The stocks are slidable lengthwise of the track by manual power and are clamped thereto at any desired position (see Fig. 6) by means of levers D, which are fulcrumed to lugs b of the stock and provided with hooked ends (1, adapted to be frictionally engaged with said rails by bearing against the shoulders a thereof by tilting upwardly the other ends of the levers by locking devices. Such locking devices are comprised of plugs d, rotatable in housings b and having eccentricallydisposed pins (1 which extend through elongated apertures in the opposite ends of the levers.

The stocks are each provided with a spindle E, journaled in standard-boxes b and .severally carry a belt-pulley 'Land a faceplate E to which the revoluble cutterknives per see are attached.

Eachof the carriages is provided with knees F F, slidable in transversely-arranged guideways O by means of set-screws G G, registering with internall -threaded lugs ff of the knees. Detachabfy connected to the upper ends of said knees, as by bolts 71., are pipe-jaws H, formed with inner faces H to correspond to the are or curvature of the peripheral surface of the pipe being operated upon.

1 The j aws are provided with pendent lugs having outwardly-protruding tongues h, which interfit with reversely-directed angular ribs '1'. of blocks I, which are seated in rejcesses formed in the several knees and are provided with longitudinal-inclined feathers It, which fit into similarly-inclined grooves f 2 in the opposing walls of the recesses. By adjusting the horizontal positions of these "blocks the vertical adjustment of the jaws is accomplished, and the blocks are retained in their set ositions by screws i or their equivalent. The horizontal adjustment of the knees is attained by means of the aforesaid set-screws, of which the front ones are individually actuated with hand-wheels g and :the others, G, in unison by power devices. The latter consist of toothed bevel gearwheels g and j, res ectively, upon these screws G and a set-s aft J, which is predeterminately driven by one or the other of the severally-driven belt-pulleys K K. These pulleys are normally loose upon their shaft and are formed or provided with frictional clutch-surfaces 7c, adapted to be enga ed by corresponding surfaces of an interpose member L, which is splined to the shaft and operated by a forked shifting-lever L, as ordinary, and having its handle end Z extending forwardly and within convenient reach of the operator. The gear-wheels j are likewise splined to their shaft, but are movable endwise thereof with the respective carriages by journaling their annular recessed hubs j in bracket-boxes c of the latter.

Provided at the head end of the bed-frame and below the level of its track is a horizontal cylinder M, within which is a piston of ordinary or suitable construction, which is rigidly connected to a rod M, extending to within a having flexible ends upon a fulcrum-bar '0, held in standards 4), p0

short distance of the other end of the frame. Means are provided on each carriage for detachably connecting the same to the pistonrod and may advantageously consist of a chambered saddle-pieceN, (see Figs. 3 and 5,) extending downwardly and seated upon the rod, and a U-bolt N, passing around the lower side of the rod and thence upwardly where the ends extend through a yoke-plate O and are provided with nuts n thereabove. This plate is turned with a cylindrical intermediate portion 0, which passes through an eccentrically-disposed hole of the circular end P of a cam-lever P, wherewith the piston-rod is capable of being engaged or released from the carriage, as may be required to accommodate the various positions in which the latter may be placed. The power medium for the aforesaid cylinder is desirablywater-pressur'e, as furnishing reliable means to effect the movement of the piston and at the same time furnish a practically unvarying opposing pressure to maintain the controlled parts under complete command. The water is conducted from a pressure-supply through a pipe 1' (see Fig. 7) to a valve-casing R, in which is a rotatable valve R, connected by an external operating-handle R whereby the valve may be actuated to direct the flow of the fluid through the pipes r and r to and from the cylinder ends, as indicated by the arrows, to cause the piston to recede, or when tilted oppositely a contrary flow and effect, and when the valve is moved intermediately of these positions to cover the inlet and egress passages to the pipes 1' and r the flow of water will be intercepted and the piston maintained immovable. Another cylinder S is provided to actuate a kicking mechanism for expeditiously removing a completed pipei'rom the carriage and is desirably of the vertical oscillating type, having its trunnions seated in bridge-bars S, extending transversely between the frame-b'e'ams A.

The system of pipeconnections is preferably similar to that already described for the hydraulic cylinder and includes an operatinghandle T, valve-casing T, located within easy reach of the operator and connected by conduit-pipes t and t with the cylinder and The piston rod of this cylinder carries at its upper end "a horizontal bar V, which is tiltably connected at its ends to kicking arms V, extending crosswise of the frame and pivotally supported sitioned at some distance to the rear of the machine.

The knives before alluded to are most clearly shown in Figs. 8 and 9 and are respectively used for external and internal cutting operations. The former consists of a looped plate W, having itscu'tting edge to extending across the top of the front w an'd'con'tinued to the extremity of the shorter arm W and -'arranged obliquely to cause the knife'to make a shearing cut as it revolves upon the work. The other knife for internal cuts is made of a plate Y, having a rectangular bend, and is formed with a cutting edge y extending diagonally across the top of the bent portion Y and partly upon the main portion or arm Y These knives are provided with slots to 9 through which bolts are passed for securing same to blocks X, carried by the face-plates, and the latter are provided with radial slots, (not shown in the drawings,) whereby the blocks can be moved to properly position the knives for thecuts to be made. I show in Fig. 1 of the drawings a pipe Z, operatively clamped by the afore'described jaws and having a reduced extremity 2 at the right-hand side and a socket 2 at the left; but practice it is usual to make both of the endswith protr'uding reduced extremities which interfit withother lengths, designated as sleeves or couplings, in which socket half-couplings alone are formed. 7

The operation of the invention is as follows: Assuming that the front jaws H are properly adjusted for the size of pipe to be headed and that the two rear ones have been moved backwardly, a length of pipe is first rolled or otherwise moved into position between the vjaws by manual or other means and is then cl-amped thereby in axial alinement with the stock-spindles through the medium of the power-gear mechanism moving the rear jaws forwardly by temporarily coupling the driving-pulley Kwith the setshaft, as before explained. The pipe thus firmly held in the carriages, which in turn are clamped to the piston-rod of the hydraulic cylinder, is caused by manipulating the valve to act upon the piston to move toward one :0f the face-plates and when within the range of the revolving knives thereof will out the end presented to the reduced diameter either ternal or external, as the case may be, and to a length appropriate to the size of requirements for the service to which the pipe is to be applied. One "end being completed, the pipe is, by means of an inverted pressure be"- ing brought to bear upon the cylinderpiston through the reversal of the valve, moved to-"- Ward the other face-plate to he act-ed upon by the revolving knives thereon, after which the carriages are caused to move by the devices .just described into position, so that the pipe will be clear of or removed from both sets of revolving knives. now coupled with the -set-shaf-t to withdraw the rear clamping-jaws from engagement with the pi e, when the latter, being released, is elevate above and rolled from the machine by means of the steam-actuated appliances therefor.

The invention is extremely simple and efv fective in accomplishing the work for which The pulley K isintended and not only performs its several 1130 functions accurately, but with great rapidity. The operation of the machine is under the control of a single man, who is capable of performing what has hitherto been thought to require the employment oftwo or more, and that, too, at an increased speed.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a bed-frame having a track, and the carriages movable longitudinally thereon, of knees slidably mounted upon said carriages, means to adjustably move said knees, a pipe-clamping jaw pivotally connected to each said knees, and means comprising blocks having inclined longitudinal feathers which register with corresponding grooves in the knees for adjusting the relative positions of said jaws.

2. In combination with a track, a carriage movable thereon, knees movably mounted on said carriage, a jaw movably connected adjacent one end to each of said knees, and a sliding element connected to the opposite end of each of the jaws and to said knees.

3. In combination with a track, a carriage movable thereon, knees movably mounted onsaid carriage, jaws pivotally connected at their upper ends to said knees, and a movable connection between the lower ends of said jaws and said knees whereby said lower ends of the jaws may be moved vertically.

4. In combination with a track, a carriage movable thereon, knees movablymounted on the carriage, jaws pivoted to said knees at their upper ends, and inclined blocks movable longitudinally of the knees and connected to said knees and to the lower ends of said jaws for raising and lowering the latter.

5. In combination with a track, a carriage movable thereon, knees movably mounted on the carriage, jaws pivoted to the knees and provided with pendent In S formed with protruding tongues, incline blocks provided with angular ribs interfitting with said tongues, and longitudinally-inclined feathers on said blocks received in similarly-inclined grooves provided therefor in said knees.

6. In combination with a traclg'aiid carriages movable thereon, a movable rod underlying the carriages, a saddle-piece carried by each carriage and projecting downwardly to seat on said rod, a U-bolt passing around the under side of'the rod, a yokelate secured to the ends of said bolt an formed with a cylindrical portion, and a cam-lever having an eccentric aperture receiving said cylindrical portion.

7. In combination with a track, and car riages movable thereon, a rod underlying the carriages, a chambered saddle-piece having its bottom seating on said rod carried by each carriage, a means encircling said rod and projecting above the top of the saddle, and a cam-lever for operating said means bearing on the top of the saddle.

8. In combination with a track, a carriage thereon, supports movably mounted on the carriage, jaws pivoted at one end to said supports, and inclined blocks having their top and bottom faces slidably related to the opposite ends of said jaws and to said supports.

9. In combination with a track, a carriage movable thereon, knees movably mounted on said carriage, a jaw pivotally connected at its upper end to each of said knees, and a sliding wedge interposed between the opposite end of said jaws and said knees.

10. In combination with a track, a carriage movablethereon, knees movably mounted on the carriage, a jaw pivotally connected at its upper end to each of said knees, and means connected to the lower ends of said jaws and to said knees to move said jaws vertically.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN S. F. MARKS. 

